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Fire places stove functionality

How the stove works

The stove generates the heat energy . It emits using both radiant and convection heat. It works like a combination of a tiled stove that only provides radiant heat and a fire places that only provides convection heat. Depending on the design and heat transfer of the cladding material, stoves have an energy efficiency of 50 to 80 percent.

In contrast: the chimney only offers an efficiency of 15 percent. The firing temperature also plays an important role in the type of heat dissipation. The higher the temperature, the higher the radiant heat share compared to the convection heat share.

Structure of a fire places

There are countless variants of wood-burning stoves. They are mostly made of cast iron or sheet steel, the combustion chamber of which is lined with heat-storing firebrick and provided with a fireproof viewing window. By burning suitable fuel inside the combustion chamber, the stove generates heat and is suitable for heating rooms. Combustion air is supplied in a controlled manner for this purpose.

The room air is sucked in via a regulator and passed through a duct in the combustion chamber. This allows the air to heat up and is released back into the living space as convection heat via the ventilation slots. The flue gases that are produced during combustion are fed into the chimney through the stove pipe. The solid combustion residues, on the other hand, fall through a vibrating grate into the ash pan and can be removed manually.

In order to achieve the highest possible efficiency and to increase the heat recovery, the steel jacket of the stove can also be clad with heat-storing materials. This means that even after the flame has gone out, the stored heat can be used in the form of radiant heat.

Convection heat

Convection is understood to mean the entrainment and distribution of energy through flow. In the case of the wood-burning stove, this means the room air heated by the stove. Fire places stoves are provided with a cavity between the outer wall and the combustion chamber. The cold room air enters the lower area of ​​the stove and warms up as it climbs up the hot walls of the stove, so that it can now exit again in the form of convection air through appropriate slots in the upper area of ​​the stove and distribute itself in the room.

Convection heat is particularly suitable when warm air circulation is desired. For example, where pieces of furniture would keep out radiant heat. However, convection heat takes a little longer than radiant heat to bring a room up to temperature, as the warm air first collects under the ceiling. A ceiling fan can help here and help distribute the warm ceiling air into the rest of the room.